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(No Model.) 5 Sheets-Sheet 1.

M. J. EIOHHORN & M. G. BUNNELL.

GRUSHING MACHINE.

N0.'585,191. Patented June 29,1897.

(No Model.) 5 Sheets-Sheet 2. M. J. EIGHHORN & M. G. BUNNELL.

GRUSHING MACHINE. No. 585,191. Patented June 29,1897.

' (No Model.) 5 Sheets-Sheet M. J. EIOHHORN 8; M. G. BUNNELL.

GRUSHING MAGHINE. No. 585,191. Patented June 29, 1897'.

m mzsm 1 wk 4% 4 I 9 m (No Model.) 5 Sheets-Sheet 4. M. J EIOHHORN & M.G. BUNNELL. GRUSHING MACHINE.

N0. 585,191. Patented June 29,1897.

(No Model.) 5 Sheets-Sheet 5.

' M. J. EIOHHORN & M. G. BUNNELL.

GRUSHING MACHINE.

UNITED STATES PATENT Prion.

MELKER J. EICHHORN AND MORTON G. BUNNELL, OF CHICAGO, ILLINOIS,ASSIGNORS TO FREDERICK C. AUSTIN, OF SAME PLACE.

CRUSHlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 585,191, dated June 29,1897.

Application filed ne 22, 1896.

T0 cLZZ whom it may concern:

Be it known that we, MELKER J. EICHHORN, a subject of the King of Swedenand Norway, and MORTON G. BUNNELL, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Crushing-Machines, ofwhich the following is a specification.

0 ur invention relates to machines for crushing or breaking ores, rock,and like material by means of a crushing-hopper having one or moremovable jaws.

Prominent objects of the invention are to lighten and reduce the size ofthe machine, so that the space occupied will be less; to provide for anequal andadvantageous distribution of the strain incident to thecrushing of hard materials and at the same time to relieve the frameworkof the machine from such strain as much as possible; to simplify theworking parts, and to arrange the same with a view to procuring anefficient and uniform crushing action with the greatest economy ofpower.

In the machine for carrying out our invention, more particularlydescribed hereinafter, the crushing-hopper comprises a couple of jaws,one of which is movable and has a combined vibratory, forward-and-back,and upand-down movement. This movable jaw is suspended by swinginglinks, preferably having their upper ends pivoted forward of their lowerends and having said lower ends pivotally connected with the lowerportion of the movable jaw. By such arrangement the jaw may have avibratory action independently of the links, and may also move with thelatter. This movable crushing-j aw is provided with a rear extensionwhich is desirably rigid with the jaw and connected with a pitman by asuitable jointed connection. The pitman is also connected at a pointnoncoincident with the point of connection of the movable jaw therewithto a tension-link, whose opposite end is supported forward of the pointof connection with the pitmanthat is to say, on the same side of thepitman as the movable jaw--and desirably forward also of the opposingcrushing member. By such arrangement the pitman receives a bodily up-Serial No. 596,421. (No model.)

and-down movement in conformity with the reciprocation of the swingingend of the tension-link and also a rocking or vibratory motion aboutsuch connection with the tensionlink. Thus the pitman serves as a leverand the end of the tension-linkconnected therewith as a movable fulcrumtherefor. thermore, the crushing force received by the movable jaw isimparted to the link as a tensile strain exerted along its length.Consequently this link has a dual function or purpose first, to providea movable fulcrum for the pitman, and, second, to relieve the frame orbed of the machine of injurious tensile strains.

Another advantage is that the working parts are all confined to the sameside of the pitman, thereby reducing greatly the size of the machine.

.In the accompanying drawings, Figure l is a plan of a crushing-machineembodying our invention. Fig.8 is a section on line 2 2 in Fig. 1. Figs.3 to 9, inclusive, illustrate different forms of link arrangement. Fig.10 is a vertical longitudinal section of a machine particularly adaptedto operate with the link shown in Figs. 7 and 8, said section beingtaken on line 10 10 in Fig. 11. Fig. 11 is a section taken on line 11 11in Fig. 10.

The crushing-hopper is arranged within an oblong frameA and comprises inthe machine shown a stationary jaw B and a movable jaw O. This movablejaw is suspended by the swinging links D, preferably having their upperends pivoted forward of their lower ends and having said lower endspivotally connected with the lower portion of the jaw. One of theselinks is illustrated, partially in full lines and partially in dottedlines, in Fig. 2, it being understood that one of these links isarranged at each side of the crushing-hopper and that theyare desirablyconnected by the pivot-bolt D. This movable crushingjaw is provided withthe rear extension 0, which is rigid therewith and which is con nectedwith the pitman E by some suitable jointed connection, the jointedconnection shown being provided by a pivot F. Other modes ofarticulation can, however, be employed.

The pitman E is operated by an eccentric II, arranged upon the rotarypower-driven shaft I. In Fig. 2 the eccentric is shown arranged within atwo-part annular bearing K, fitted with the recessed upper portion ofthe pitman, which latter has a removable cap or top 6, held down bybolts, whereby the pitman can be removed when. so desired.

The tension-link controlling the pitman could be a single link ofsuitable construc tion and arrangement, but asa matter of further andspecific improvement we employ a yoke or frame whose sides extend oneither side of the pitman and movable jaw and whose ends are adapted foruse as pivotal connections with the pitman and the framework of themachine, respectively. Various forms of such a yoke are shown in Figs. 3to J, inclusive.

In Figs. 3 and 4C the double side bars 7a are bolted to a suitable headL, in which the cylindrical rods 7; 7.? are fitted. In that shown inFigs. 5 and (3 three sides of the yoke are composed of a single bar 7:,the ends of which are passed through the rod It" and firmly bolted.

In Figs. 7 and S the yoke is formed of a continuous band or strap 7;,the ends of which support the rods 7t" 7:), which are provided with thesemicircular beads K and K on one side and are channeled on the oppositeside to fit the band 7a.

In Fig. 9 the end portions of the strap or band 7c are curved outwardly,and the surfaces of the rods in bearing against the same arecorrespondingly convex. This arrangement renders the strain upon the endportions more longitudinal and less transverse, and thereby reducestheir liability of break ing, especially at the corners.

The yoke illustrated in Figs. 3 and T is pivotally connected to thepitman, as shown in Figs. 1 and 2, by passing the bar 7: through a holein the pitman, Fig. 2, preferably in such a manner that a line passedthrough this point of connection and through the point of connection ofthe movable jaw at F lies oblique to a line along the length of thepitman. The points of connection of the yoke and jaw with the pitmancould bear various relations with one another in accordance with thewellknown laws of leverage. As a preferred arrangement, however, thepoint of connection of the jaw with the lever is between the point ofconnection of the yoke therewith and the eccentric where power isapplied, and said points of connection are on opposite sides of thelength of the pitman, with the point of connection of the jaw inadvance, as shown in Fig. 2. The yoke is also supported by the frame ofthe machine forward of the stationary crushing-jaw I as by arranging therod 7.1 in a suitable bearing M and securing the latterin the recess N,formed in the body portion of the jaw 13.

The arrangement of the machine when the link shown in Figs. 7 and S isemployed is illustrated in Figs. 10 and 11. In such case it will benoticed that the beads K and K on the ends of the link fit intocorresponding grooves in the pitman and the block M, respectively. Therod S, attached to the movable jaw and connected to the frame throughthe medium of a spring or cushion T, prevents the loosening anddisplacement of the link when the crushing strain is insufficient tohold it in position.

In each case it is evident that the up anddown motion of the pitmancauses the yoke to vibrate or swing about the center 762, the point 7.;therefore describing an arc of a circle during its rise and fall.

During the operation of the machine the movable crushing-jaw has thefollowing action, to wit: a compound movement involving a certain extentof bodily forward-andback movement, an up-and-down movement, and arocking or vibratory movement. During such compound movement on the partof the crushing-jaw the pitman has an up-anddown movement and also avibratory movement about a point between its upper and lower ends.

\Vith reference to Figs. 2 and 10 it will be seen that when the pitmanmakes its downstroke it forces the movable crushing-jaw forward, and atthe same time the forward swing of the links causes the jaw to movedownwardly, thereby contracting the dischargeopening at the bottom ofthe crushing-hopper, and also feeding the crushed material downwardlythrough such contracting opening.

\Vhen the pitman is raised, the links will swing rearwardly and the jawwill rise and swing back. During the forward movement, however, of thejaw its lower end portion will have the greatest extent of movement; butbefore such lower end portion of the jaw reaches the limit of itsforward movement its upper end portion tilts, thereby permitting thematerial at the top of the hopper to settle down between thecrushing-jaws. The links then swing back and the jaw commences to have aback-and-up movement; but before the lower end portion of the jawreaches the limit of its back movementthe upper portion of the jawcommences to again tilt forward and move downwardly. The down-feed andcrushing action are therefore practically continuous, since the materialwill be crushed in alternation between the jaw 13 and the upper andlower portions of the vibratory movable jaw, which portions will have agrinding as well as a direct crushing action.

The tension-link, which is connected with the pitman and with the frameforward of the pitman, has an evceedinglyimportant and eflicient action.Its rise and fall imparts to the pitman, and therefore to the movablejaw, the desired forward-and-back motion, which may be regulated to meetthe requirements of the case by varying its length-that is to say, byvarying the distance between its points of connection with the frame andpitman.

What we claim as our invention is- 1. A crushing-machine having acrushing hopper comprising a movable jaw supported for bodilyforward-and-back swinging movement; a lever having a jointed connectionwith said jaw; and a link having one end pivotally connected with saidlever, and the other end supported forward of such point of connection,whereby the lever, which is thus provided with a reciprocating fulcrumby its connection with the swinging link, imparts to the movable jaw abodily forward-and-back movement by its vibratory motion about suchreciprocating fulcrum, and also whereby the resistance offered to themovement of the crushing-jaw is received by the link as a tensilestrain, as set forth.

2. A crushing-machine having a crushinghopper comprising a movable jawsupported for bodily forward-and-back-swinging movement; a lever havinga jointed connection with said jaw; and a link having one end pivotallyconnected with said lever and the other end supported forward of theopposing crushing member, as set forth.

3. A crushing-machine havinga crushinghopper comprising a movable jawsupported for bodily forward-and-back swinging movement; a lever havinga jointed connection with said jaw; and a link having one end pivotallyconnected with said lever, and the other end supported forward of suchpoint of connection the point of connection of the jaw with the leverbeing between the point of connection of the link therewith and thepoint of application of power thereto, and such points of connectionbeing situated on opposite sides of the length of the lever with thepoint of connection of the jaw in advance of the point of connection ofthe link, as set forth.

4:. A crushing-machine having a crushinghopper comprising a movable jaw;swinging links by which said jaw is suspended; a lever having a jointedconnection with the jaw; and a tension-link having one end pivotallyconneeted with said lever, and the other end supported forward of suchpointof connection, as set forth.

5. A crushing-n1achine having a crushinghopper comprising a movable jaw;swinging links to which said j aw is pivotally connected; a lever havinga jointed connection with the movable jaw; and a tension-link having oneend pivotally connected with said lever, and the other end supportedforward of the opposing crushing member, as set forth.

6. A crushing-machine having a crushinghopper comprising a movable jaw;swinging links for said jaw, said links being supported at their upperends in front of the jaw and the jaw being pivotally connected therewithat their lower ends; a lever having a jointed connection with themovable jaw; and a tension-link having one end pivotally connected withsaid lever, and the other end supported forward of the opposing crushingmember, as set'forth.

7. A crushing-machine having a crushinghopper comprising a movable jaw;swinging links supported at their upper ends forward of the jaw, andpivotally connected at their lower ends to the lower portion of thelatter; a pitman having a jointed connection with said movable jaw; andayoke adapted to form a tension-link, and having one end pivotallyconnected with said pitman at a point noncoincident with the point ofconnection of the jaw therewith, and the other end supported forward ofthe opposing crushing member, and having its sides arranged on eitherside of the crushing members, substantially as described.

8. In a crushing-machine, the combination with the movable crushing-jawand means for operating the same, of a yoke or frame adapted to form atension-link for connecting the said jaw with the bed of the machine,said yoke or frame having outwardly-curved or convex ends, and beingprovided with end pieces constructed with one side correspondinglycurved to fit the convexity of the yoke ends, and with the other sidesadapted to engage suitable bearing portions on the crushing-jaw and onthe bed of the machine, substantially as described.

MELKER J. EIOHHORN. MORTON G. BUNNELL. Witnesses:

BETA M. WAGNER, A. F. DURAND.

